Assetto Corsa Is Obsolete V1.16.3 Is Required Fix [verified] Jun 2026

While this error is frustrating, keeping Assetto Corsa at the latest v1.16.3 (or higher, depending on CSP) is essential for:

(CSP). It typically occurs because these tools fail to correctly detect your game's current version, often following a small official update or due to missing local metadata. Top Recommended Fixes Modify the Changelog File (Fastest Fix)

The "Assetto Corsa is obsolete v1.16.3 is required" error is just a sign that your simulation is ready for a refresh. By forcing a Steam update and keeping your Custom Shaders Patch updated in Content Manager, you will resolve this issue instantly. assetto corsa is obsolete v1.16.3 is required fix

Assetto Corsa is Obsolete v1.16.3 is Required: Fixes and Solutions (2026 Updated)

Navigate to your Assetto Corsa root folder (usually C:\Program Files (x86)\Steam\steamapps\common\assettocorsa ). Locate and open the file named using Notepad. While this error is frustrating, keeping Assetto Corsa

As one veteran modder noted, "Leaving this error and not doing anything is also an option, as this error does not appear to cause any functional issues from my testing so far". Many of the most dedicated Assetto Corsa enthusiasts simply live with the error message, focusing their energy on what matters: enjoying the incredible driving experience that AC provides.

In Content Manager, try checking the option under your general settings page if the 64-bit executable throws errors. By forcing a Steam update and keeping your

The error is a common issue faced by sim racers, usually triggered after installing or updating the Custom Shaders Patch (CSP) via Content Manager. If your simulation is failing to launch or throwing this annoying error, it does not mean your game is broken.

Many users attempt to simply right-click the game and select "Update," only to find no update available. This is because Steam believes the game is "installed" but doesn't realize the version numbers are mismatched. The "Verify Integrity" tool is the diagnostic mechanic; it forces Steam to look deeper than just the installation status and actually check the versioning of the code. This is almost guaranteed to trigger the necessary ~300MB to ~1GB download required to push the game to v1.16.3.